primary arc 中文意思是什麼
primary arc
解釋
原始構造弧-
So far, the main frame of the conjugation of betrand are established, on the basis of which, it is given that the primary condition the directrix line must be satisfied, the relative curvature of the conjugating surfaces, the relations between non - interventional condition and curvature axle of the directrix line, and so on. the transmission of normal circular - arc gear is a typical bertrand conjugation. in order to promote the transformation from theory to technology, the general principle of this kind of transmission is studied
為了使研究更加貼近於工程，便於解析處理，提出準面的概念，並確立由準面到準線的研究路線，給出了各種傳動形式下準面與準線的具體特徵，證明了共軛準面上兩準線的誘導測地曲率等於零的這一不干涉條件，進而指出，當準面為平行軸和相交軸傳動的節曲面時，不干涉條件自然滿足。 -
Magnus ' halberd swings in a mighty arc, damaging all enemies in a fairly wide circle. targets beside the primary take less damage
半人猛獁的長矛劃出一道弧線，對250范圍內的所有敵方地面單位造成傷害。第一攻擊目標受到全額傷害，其餘目標受到較少傷害。 -
3. the arc erosion of cuw80 / crcu integrated contact is primary forming the thicker shell and th shell flake off. 4
摘要（ 3 ） cuw8o主要是以產生較厚的以w為主的殼層，然後在電弧的反復作用下，殼層剝落，如此循環，導致觸頭的最終燒損。 -
The mathematic model of the ultra - thin spherical mirror is to be treated as elastic thin shell. then the predigested model, i. e., bended beam, used in qualitative analysis was proposed, and its deflection and stress formulas under the freely supported condition were set up. based on an off - axis aspherical primary mirror, the relationship of aspherical surface error ( rms ) in tangential plane with bended beam ’ s radius r, position s of concentrated load p and geometry length l of arc was analyzed
根據這一設想，本文建立了超薄鏡的數學模型?薄殼，並提出了強制力作用下超薄鏡的簡化模型?曲梁，推導了曲梁在簡支情況下受力變形的撓度公式，並結合一個實例，計算出曲梁變形后與所需非球面的面形殘差（ rms ）在子午方向與曲梁弧長l 、曲梁半徑r及集中力位置s的關系及滿足面形精度的r和s范圍，分析了弧矢方向的rms ，得出了同時滿足子午和弧矢方向面形要求的l 、 r和p 。 -
Based on the comprehensive study on contact erosion and massive tests, it is found that the erosion of cb contacts is dominantly depend on the arcing time and breaking current. this paper analyses the mechanism of electrical arc of vacuum circuit breaker and discusses the primary factores. then this paper put forwardes a way to prognosticates the life exepctancy of electrical endurance of vacuum circuit breaker base on the power of arc
本文分析了真空斷路器的燃弧機理，探討了影響真空斷路器電壽命的主要因素，指出了原先以開斷電流作為預測真空斷路器電壽命的方法的不足，提出了改進的以燃弧能量為主要指標的預測方法。 -
The region, a 900 - mile ( 1, 450 - kilometer ) arc of 76 sparsely populated atolls and two islands, is one of the world ' s primary producers of cultured black pearls
這片900英里的弧形區域由稀疏分佈的76個環礁和2個島嶼組成，它也是世界上主要黑珍珠產地之一。 -
In this paper, associated with the key problem of 550kv sf6 high voltage circuit breaker which is used in gis of three gorges project, the mathematical models of static electrical field and one - dimensioned and two - dimensioned gas flow field during the overall breaking process in arc chamber of circuit breaker are developed. on the basis of gas discharge theory, the criteria to judge the interruption success is determined. through the combination of one - dimensioned and two - dimensioned gas flow field software, the problem that the primary two - dimensioned gas flow field software ca n ' t calculate the hot gas flow field has been effectively solved
本文結合長江三峽550kvgis中sf6斷路器的科技攻關項目，建立了斷路器開斷過程中滅弧室內靜電場、一維氣流場、二維氣流場的數學模型；根據氣體放電的基礎理論選定了衡量斷路器能否成功開斷的標準，並通過一維和二維氣流場的有機結合，有效地解決了原二維氣流場計算軟體無法計算有載開斷的難題，具有較強的工程實用性。
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